The Young blonde girl is locked in a hospital or a military type lab place. She is locked in a room for what I remember to be a long time. But she wants to escape and she puts something on the door so she can get out. When she does she sees clones of her in other rooms.

Just guessing here... maybe Anna to the Infinite Power?

How old is the movie? There was a movie about cloning with Scarlett Johanson called The Island.

I think purukival is right. (I would rate your answer but it is telling me I need to spread some reputation around before I rate you. I don't know what that means)
I forgot to say that it was a lot older.